Freshwater Atlas Islands

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Published by the Ministry of Forests, Lands, Natural Resource Operations and Rural Development - GeoBC
Licensed under Open Government Licence - British Columbia

All island polygons. Islands may overlap as there are islands within islands (e.g., a lake on an island contains an island).

GNIS_NAME_1 contains the most atomic name for the island. For example, there are 3797 "Haida Gwaii" islands. If the island has not been named as part of a more specific group or with an individual name, "Haida Gwaii" is the GNIS_NAME_1 value. GNIS_NAME_2 and GNIS_NAME_3 values are null. If the island has a more specific name, "Haida Gwaii" moves to GNIS_NAME_2, and the more atomic name, such as "Moresby Island" is the GNIS_NAME_1. If the island has an individual name, belongs to a group, and is part of Haida Gwaii, the same logic of naming from most to least specific applies. For example, GNIS_NAME_1 = "George Island", GNIS_NAME_2 = "Copper Islands", GNIS_NAME_3 = "Haida Gwaii".

Data and Resources

Dataset Extent

Latitude: 48.0° to 60.0°
Longitude: -139.5° to -113.5°

Additional Information

Purpose

This spatially-based information is typically used in allocation decisions, boundary definitions, planning processes and environmental monitoring, by internal and external stakeholders.

Lineage Statement

Automated, mathematical and statistical algorithms were applied against the TRIM I stream network and the TRIM I elevation surface model.

Contact Information

NameGeoBC Inquiries (pointOfContact)
EmailGeoBCInfo@gov.bc.ca
OrganizationMinistry of Forests, Lands, Natural Resource Operations and Rural Development
Sub-OrganizationGeoBC

Access & Security

Who can view this dataset? Public
Who can download this dataset?Public

Metadata Information

Record Published 2011-03-09
Record Last Modified 2019-05-04
Resource Status onGoing

Object Description

Object Name: WHSE_BASEMAPPING.FWA_ISLANDS_POLY

Short Name: FWSLNDSPL
Comments: Contains all island polygons. Islands may overlap as there are islands within islands. Spatial geometry: multipart polygon

Column Name Short Name Data Type Data Precision Comments
ISLAND_ID ISLAND_ID NUMBER 18 ISLAND ID is a unique identifier for each feature.
ISLAND_TYPE SLNDTP VARCHAR2 12 ISLAND TYPE contains one of "Fresh", "Marine" or "Marine/Fresh"
GNIS_ID_1 GNIS_ID_1 NUMBER 10 The BCGNIS (BC Geographical Names Information System) feature id.
GNIS_NAME_1 GNSNM1 VARCHAR2 80 The name of the first BCGNIS (BC Geographical Names Information System) feature id (an English name was used where available, otherwise another language was selected).
GNIS_ID_2 GNIS_ID_2 NUMBER 10 A second BCGNIS (BC Geographical Names Information System) feature id
GNIS_NAME_2 GNSNM2 VARCHAR2 80 The name of the second BCGNIS (BC Geographical Names Information System) feature id (an English name was used where available, otherwise another language was selected).
GNIS_ID_3 GNIS_ID_3 NUMBER 10 A third BCGNIS (BC Geographical Names Information System) feature id attached
GNIS_NAME_3 GNSNM3 VARCHAR2 80 The name of the third BCGNIS (BC Geographical Names Information System) feature id (an English name was used where available, otherwise another language was selected).
FWA_WATERSHED_CODE FWWTRSHDCD VARCHAR2 143 Populated with the watershed code of the island for coastal islands; and the most downstream watershed code of bounding features for interior islands. Vancouver Island is handled specially.
LOCAL_WATERSHED_CODE LCLWTRSHDC VARCHAR2 143 Populated with the local watershed code of the island for coastal islands; and the most downstream local watershed code of bounding features for interior islands. Vancouver Island is handled specially.
AREA_HA AREA_HA NUMBER 38 Area of the watershed, in hectares.
FEATURE_CODE FTRCD VARCHAR2 10 FEATURE CODE contains a value based on the Canadian Council of Surveys and Mapping's (CCSM) system for classification of geographic features.
GEOMETRY GEOMETRY SDO_GEOMETRY 1 GEOMETRY is the column used to reference the spatial coordinates defining the feature.
OBJECTID OBJECTID NUMBER 38 OBJECTID is a required attribute of feature classes and object classes in a geodatabase.
SE_ANNO_CAD_DATA BLOB 4000 SE_ANNO_CAD_DATA is a binary column used by spatial tools to store annotation, curve features and CAD data when using the SDO_GEOMETRY storage data type.
FEATURE_AREA_SQM NUMBER 19 FEATURE_AREA_SQM is the system calculated area of a two-dimensional polygon in square meters
FEATURE_LENGTH_M NUMBER 19 FEATURE_LENGTH_M is the system calculated length or perimeter of a geometry in meters